2025 Pacific hurricane season

The 2025 Pacific hurricane season was an active Pacific hurricane season with an above average number of tropical cyclones, largely due to warmer than average sea surface temperatures off the western coast of Mexico. In the Eastern Pacific basin (east of 140°W), 18 named storms formed; 10 of those became hurricanes, of which 4 strengthened into major hurricanes. In the Central Pacific basin (between 140°W and the International Date Line), two named storms formed; one of which strengthened into a major hurricane. Additionally, two systems entered into the basin from the east. Collectively, the season had an above-normal accumulated cyclone energy (ACE) value of approximately 127.3 units. The season officially began on May 15, 2025 in the Eastern Pacific, and on June 1 in the Central Pacific; both ended on November 30. These dates, adopted by convention, historically describe the period in each year when most tropical cyclogenesis occurs in these regions of the Pacific.

In contrast to last season, which was the latest starting Pacific hurricane season on record in the satellite era, there were multiple early season storms this year. Tropical Storm Alvin was the first system of the season. It formed off the coast of southern Mexico on May 28, and impacted western Mexico. It was followed by five systems in June, two of which became major hurricanes. Tropical Storm Dalila caused significant flooding in Mexico while passing offshore. Hurricane Erick became the earliest major hurricane to make landfall on either coast of Mexico (Pacific or Atlantic). Erick caused at least US$350 million in damage and 24 fatalities in southwestern Mexico. It was followed by Hurricane Flossie, which passed near the coast of southwestern Mexico, resulting in flooding and property damage. In August, Tropical Storm Ivo brought strong winds and heavy rain to parts of Mexico. In September, Hurricane Lorena, Tropical Storm Mario, and Hurricane Narda brought similar effects to the same region while Hurricane Kiko passed close to Hawaii. Then, in October, remnant moisture from Hurricane Priscilla and Tropical Storm Raymond contributed to floods and landslides in several Mexican states and brought heavy rainfall to the Southwestern United States. The last storm of the season, Tropical Storm Sonia, dissipated on October 28, with no further storms forming in November.